IAggregateFluentExtensionsGroupTResult, TKey, TNewResult Method (IAggregateFluentTResult, ExpressionFuncTResult, TKey, ExpressionFuncIGroupingTKey, TResult, TNewResult) (original) (raw)
Appends a group stage to the pipeline.
Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.10.0+569905ff5e778c38ea19d9d0392496a83e1704ed
Syntax
public static IAggregateFluent Group<TResult, TKey, TNewResult>( this IAggregateFluent aggregate, Expression<Func<TResult, TKey>> id, Expression<Func<IGrouping<TKey, TResult>, TNewResult>> group )
Public Shared Function Group(Of TResult, TKey, TNewResult) ( aggregate As IAggregateFluent(Of TResult), id As Expression(Of Func(Of TResult, TKey)), group As Expression(Of Func(Of IGrouping(Of TKey, TResult), TNewResult)) ) As IAggregateFluent(Of TNewResult)[] static member Group : aggregate : IAggregateFluent<'TResult> * id : Expression<Func<'TResult, 'TKey>> * group : Expression<Func<IGrouping<'TKey, 'TResult>, 'TNewResult>> -> IAggregateFluent<'TNewResult>
Parameters
aggregate
Type: MongoDB.DriverIAggregateFluentTResult
The aggregate.
id
Type: System.Linq.ExpressionsExpressionFuncTResult, TKey
The id.
group
Type: System.Linq.ExpressionsExpressionFuncIGroupingTKey, TResult, TNewResult
The group projection.
Type Parameters
TResult
The type of the result.
TKey
The type of the key.
TNewResult
The type of the new result.
Return Value
Type: IAggregateFluentTNewResult
The fluent aggregate interface.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IAggregateFluentTResult. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
See Also